:root{
      --bg:#f5fbfb;
      --bg2:#eef8f7;
      --card:#ffffff;
      --line:#d7e7e5;
      --text:#163235;
      --muted:#557075;
      --brand:#0ea5a4;
      --brand2:#1d7ff2;
      --brand3:#0f766e;
      --accent:#dff7f6;
      --shadow:0 18px 48px rgba(15, 118, 110, .10);
      --radius:20px;
      --radius-sm:14px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at top left, rgba(14,165,164,.12), transparent 30%),
      radial-gradient(circle at top right, rgba(29,127,242,.10), transparent 28%),
      linear-gradient(180deg,var(--bg),#fff 58%,#f7fbfb);
      color:var(--text);line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:40;background:rgba(245,251,251,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(215,231,229,.75)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:74px}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .logo-box{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,rgba(14,165,164,.14),rgba(29,127,242,.12));display:grid;place-items:center;overflow:hidden;border:1px solid var(--line);box-shadow:0 10px 24px rgba(15,118,110,.08)}
    .brand .txt{min-width:0}
    .brand h2{margin:0;font-size:18px;line-height:1.2}
    .brand p{margin:2px 0 0;color:var(--muted);font-size:12px}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#214145;padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{background:var(--accent);color:var(--brand3)}
    .nav-tools{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:12px 18px;font-weight:700;transition:.25s;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 28px rgba(14,165,164,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 36px rgba(14,165,164,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b9d9d6;transform:translateY(-1px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:28px 0 16px}
    .hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:20px;align-items:stretch}
    .hero-main,.hero-side,.card,.panel,.price-box,.form-wrap,.faq-item,.review-card,.case-card,.blog-card{background:var(--card);border:1px solid rgba(215,231,229,.95);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;pointer-events:none}
    .hero-main:before{width:240px;height:240px;background:radial-gradient(circle,rgba(14,165,164,.18),transparent 68%);right:-80px;top:-60px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle,rgba(29,127,242,.14),transparent 68%);left:-70px;bottom:-60px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(223,247,246,.9);color:var(--brand3);font-weight:700;font-size:13px;border:1px solid #cceceb}
    h1{margin:16px 0 12px;font-size:clamp(30px,4vw,54px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .point{padding:14px;border-radius:18px;background:linear-gradient(180deg,#f7fbfb,#fff);border:1px solid #e3efee}
    .point strong{display:block;font-size:18px}
    .point span{color:var(--muted);font-size:13px}
    .hero-side{padding:24px;display:grid;gap:14px}
    .mini-stat{padding:16px;border-radius:18px;background:linear-gradient(135deg,#f7fbfb,#eef9ff);border:1px solid #dcebef}
    .mini-stat b{display:block;font-size:26px}
    .mini-stat small{color:var(--muted)}
    .stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:18px}
    .stat{padding:20px}
    .stat .num{font-size:28px;font-weight:800;color:var(--brand3)}
    .section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:26px}
    .section-head p{margin:0;color:var(--muted);max-width:66ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .card{padding:22px}
    .card h3{margin:10px 0 8px;font-size:18px}
    .card p,.card li{color:var(--muted)}
    .icon{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,rgba(14,165,164,.16),rgba(29,127,242,.10));display:grid;place-items:center;color:var(--brand3);font-weight:800}
    .feature-list{display:grid;gap:10px;padding-left:18px;margin:0}
    .pill-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid #dbe9e7;color:#214145;font-size:13px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .timeline{display:grid;gap:12px}
    .step{display:flex;gap:14px;padding:16px;border-radius:18px;border:1px solid #e1ecea;background:#fff}
    .step .dot{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;display:grid;place-items:center;font-weight:800;flex:none}
    .table-wrap{overflow-x:auto;border-radius:20px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid #e6efee;text-align:left;vertical-align:top}
    th{background:#f4fbfb;color:#274b50;font-size:14px}
    td{color:var(--muted);font-size:14px}
    .rating{color:#0f766e;font-weight:800}
    .highlight{color:#0f766e;font-weight:700}
    .price-box{padding:22px}
    .price-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
    .price-item{padding:16px;border-radius:18px;background:linear-gradient(180deg,#f6fbfb,#fff);border:1px solid #e1ecea}
    .price-item strong{font-size:20px}
    .form-wrap{padding:22px}
    form{display:grid;gap:14px}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    label{display:grid;gap:8px;font-size:14px;font-weight:700;color:#254247}
    input,select,textarea{width:100%;border:1px solid #cfe1df;border-radius:14px;padding:12px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#74cfc8;box-shadow:0 0 0 4px rgba(14,165,164,.10)}
    textarea{min-height:120px;resize:vertical}
    .two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start}
    .faq{display:grid;gap:12px}
    .faq-item summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:800;color:#244449}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item .answer{padding:0 20px 18px;color:var(--muted)}
    .review-card{padding:20px}
    .review-top{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:10px}
    .stars{color:#f59e0b;letter-spacing:2px}
    .case-card,.blog-card{padding:20px}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
    .tag{font-size:12px;padding:6px 10px;border-radius:999px;background:#effaf9;border:1px solid #d8ece9;color:#245157}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 16px 30px rgba(14,165,164,.28);border:none}
    .客服-box{position:fixed;left:16px;bottom:16px;z-index:60}
    .service-card{width:min(340px,calc(100vw - 32px));padding:16px;border-radius:20px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .service-card h3{margin:0 0 10px}
    .service-card p{margin:8px 0;color:var(--muted)}
    .service-card img{border-radius:14px}
    footer{margin-top:10px;padding:24px 0 30px;background:#0f2f33;color:#def3f1}
    footer a{color:#bceae7}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .8fr;gap:18px}
    .footer-grid p,.footer-grid li{color:#c8e4e1}
    .footer-grid ul{margin:0;padding-left:18px}
    .small{font-size:13px;color:var(--muted)}
    .reveal{opacity:0;transform:translateY(14px);transition:.7s ease}
    .reveal.in{opacity:1;transform:none}
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid rgba(215,231,229,.55)}
    .topbar .links{display:flex;gap:12px;flex-wrap:wrap}
    .anchor-nav{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}
    .anchor-nav a{padding:12px 12px;border:1px solid #dce9e7;border-radius:14px;background:#fff;text-align:center;font-size:14px}
    .anchor-nav a:hover{background:#f2fbfb}
    .mobile-only{display:none}
    @media (max-width: 1080px){
      .hero-grid,.two-col,.split,.footer-grid{grid-template-columns:1fr}
      .grid-4,.grid-3,.stat-grid,.price-row{grid-template-columns:repeat(2,minmax(0,1fr))}
      .anchor-nav{grid-template-columns:repeat(3,minmax(0,1fr))}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-only{display:block}
      .desktop-only{display:none}
    }
    @media (max-width: 720px){
      .container{width:min(var(--max),calc(100% - 24px))}
      .hero-main{padding:24px}
      .hero-points,.grid-4,.grid-3,.stat-grid,.price-row,.form-grid,.anchor-nav{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .brand h2{font-size:16px}
      h1{font-size:28px}
      .btn{width:100%}
      .hero-actions,.nav-tools{width:100%;flex-direction:column}
      .nav{flex-wrap:wrap;padding:10px 0}
    }
    .mobile-panel{display:none;padding:12px 0 16px}
    .mobile-panel.open{display:block}
    .mobile-panel .nav-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
    .mobile-panel .nav-links a{background:#fff;border:1px solid var(--line);text-align:center}